which sitcom had the worst final season of any sitcom?

I don't think That 70s Show had the worst final season of any of the sitcoms mention. Sure it hasn't been the best, but I think its still watchable. So far theres been 2 episode that havent been good.. All the rest have been watchable or great. Of course Im not a fan of how the writers had Eric/Donna broke up, and how Randy/Donna are going to get together.. but overall its been an okay season.

I'm trying to think of something with a worse last season than Welcome Back Kotter.

I'm trying to think of something with a worse last season than Welcome Back Kotter. i thought of one worse than kotter. the last season of night court was worse

Roseanne was the absolute worst although L&S and WBK were pretty bad.